Multilevel inverters are well used in grid
connected domestic photovoltaic applications because of their ability to generate
a very good quality of waveforms, reducing switching frequency, and their low voltage
stress across the power devices. However, this kind of inverter has to be modified
to both limit common-mode currents and improve the robustness of the system. This
paper presents a new mixed 5-level inverter that meets these challenges. The operating
principle of the converter is proposed. Several experimental measurements are described
to validate this new concept. The output voltage and current and the THD of the
output voltage are particularly discussed.